The following table lists the tests that can be performed on Current Transformers (CT) and Voltage Transformers (VT), Power Transformer (PT), Ground Grid.

Description

T 2000 is a unique solution for all testing operations during commissioning and maintenance of substations, as it allows to perform the test of over-current relays, current, and voltage transformers. It is also capable of testing energy meters and transducers. In addition, T 2000 incorporates a powerful multi-meter and phase angle meter, and oscilloscope functions.

System Description

T 3000 contains three independent generators:

• Main generator. It has six outputs: High AC current; Low AC current; Low DC current; Current impulses; High AC voltage; Low AC voltage
• Auxiliary AC voltage generator: it generates an independent, phase adjustable AC voltage
• Auxiliary DC voltage generator, to feed the relay under test

All outputs are adjustable and metered on the large, graphic LCD display. With the multi-purpose control knob and the graphic LCD display, it is possible to enter the MENU mode, which allows controlling all functions, and makes T 3000 the most powerful testing device, with manual and automatic testing capabilities, and with the possibility to transfer test results to a PC via the RS232 interface. These results can be recorded, displayed, and analyzed by the powerful TDMS software, which operates with all WINDOWS versions, starting from WINDOWS 98 included.

Additional features are:

• Oscilloscope function: it is possible to display the current and voltage waveforms
• Two independent measurement inputs, for current and voltage and with High and Low inputs each; allow measuring CT or VT outputs or any other source
• The optional thermal printer gives the immediate printout of the CT saturation curve and other test results
• An auxiliary output contact, that follows START and STOP inputs, allows simulating the circuit breaker.

The instrument is housed in a transportable aluminum box, which is provided with a removable cover and handles for ease of transportation

T 3000 Technical Specification

The main generator has six outputs: High AC current; Low AC current; Low DC current; Current impulses; High AC voltage; Low AC voltage. Output adjustment is performed via a knob. The following specification applies to the separate usage of these outputs.

High AC current output

Application:

• CT testing: ratio, polarity, the burden
• primary injection
• relay testing: electro-mechanical (high power) and numeric (low power)

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The following table lists the tests that can be performed on Current Transformers (CT) and Voltage Transformers (VT), Power Transformer (PT), Ground Grid.

Description

T 2000 is a unique solution for all testing operations during commissioning and maintenance of substations, as it allows to perform the test of over-current relays, current and voltage transformers. In addition, T 2000 incorporates a powerful multi-meter and phase angle meter, and oscilloscope functions.

System Description

T 2000 includes a multiple generator, with six outputs: High AC current; Low AC current; Low DC current; Current  impulses; High AC voltage; Low AC voltage.The selected output is adjustable and metered on the large, graphic LCD display. With the multi-purpose control knob and the graphic LCD display it is possible to enter the MENU mode, that allows to control all functions,and makes T 2000 the most powerful testing device, with manual and automatic testing capabilities, and with the possibility to transfer test results to a PC via the RS232 interface. These results can be recorded, displayed and analysed by the powerful TDMS software, which operates with all WINDOWS versions, starting from WINDOWS 98 included.

Note:WINDOWS is a trademark of MICROSOFT inc.

Additional features are:

• Oscilloscope function: it is possible to display the current and voltage waveform measured;
• Two independent measurement inputs, for current and voltage, and with High and Low inputs each, allow measuring CT or VT outputs or any other source;
• The optional thermal printer gives the immediate printout of the CT saturation curve and other test results;

The instrument is housed in a transportable aluminium box,which is provided with removable cover and handles for ease of transportation.

Technical Specification

The generator has six outputs: High AC current; Low AC current;Low DC current; Current impulses; High AC voltage; Low AC voltage. Output adjustment is performed via a knob.

The following specification applies to the separate usage of

these outputs.

High AC current output

Application:

• CT testing: ratio, polarity, burden
• primary injection
• relay testing: electro-mechanical (high power) and numeric (low power)

The post ISA T 2000 first appeared on JMD.

KAM test system is designed for primary injection testing of protection relays and circuit breakers, for commissioning and revamping of substations and electrical networks.

• High current output up to 7000 A
• Powerful output up to 35 kVA
• Modular design for easy transport
• Primary current injection testing
• Protection relay testing
  •Low voltage Breaker testing
• Heat runs
• CT testing

Specific

The test system KAM is a high current unit consisting of a control unit and one or two external power transformers, that can be easily taken in the proximity of bus bars, thus keeping to the

minimum the test cable length.

KAM range comprises four models:

• KAM 2/5
• KAM 5/12.5
• KAM 5/12.5G
• KAM 10/25
• Current range or voltage output selection: by means of a five-position I/V selector switch: 500A –1000A – 2000A – 6000A – V

(750 – 1500 – 3000 – 6000 – V for the G model)

• Current and power range selection
• Coarse and fine output adjustment
• Current metering: by 4 and a half digit instrument, with hold function
• Adjustable voltage output characteristics:

– Range: 0 to 270 V AC

– Current output: 0 to 15 A

Timer

• Metering: from current injection to contact tripping (relay tests)or current injection duration (circuit breaker tests); switch selection.
• Timer range: 999.99 s or 99.999 s; switch selectable. Accuracy:
• ± 0.01% ± 1 digit.
• Display on 5 digits, and with built-in 10 MHz quartz oscillator. Input contacts dry or wet.
• Voltage range: 24 V to 220 V, DC or AC.

Power Supply

Power supply: 230 V ±15%; 50/60 Hz.

• Protections
• Magneto-thermal circuit breaker on the mains supply.
• Fuses on DC supplies.
• Alarm light and buzzer if the output current exceeds 120% of the selected range.
• Current cannot be injected if the transformer is not connected. Thermal protection on the power transformers, with alarm light. Impulse current cut-off is not reset at power down.
• Fuse protection on the auxiliary voltage output: T5.
• The adjustable, not isolated voltage, is not available unless with
• V selection.

Case

• Control unit: an aluminum case with cover and handles.
• Power transformers : an aluminum case with handles and wheels.
• Weight and Dimensions

Control Unit

• KAM2/5, KAM 5/12.5 and KAM 5/12.5G: 33 kg
• KAM 10/25: 37 kg
• Dimensions: 300 x 620 x 260 mm

The post ISA KAM first appeared on JMD.

eKAM test system includes two portable units: one control unit with a  large graphical display that adjusts the AC voltage output

(up to 220 V) and one current unit (up to 2000, 3000, 5000A).

BUX 2000 (2000 A) – BUX 3000 (3000 A) – BUX 5000 (5000 A): one or more BUX current units can be connected to eKAM (not simultaneously), they can be ordered separately when the order is placed or at a later moment.

With the control knob and the LCD display, it is possible to enter the MENU mode, which allows setting many functions, making eKAM a very powerful testing device, with manual and automatic testing capabilities and with the possibility to transfer test results to a PC via ETHERNET or Pen Drive. The TDMS software, which comes with the test set, allows to download, display and analyze test results obtained in local mode. Remote maintenance and diagnosis of the instrument are available via Ethernet. TDMS software operates with all Windows® versions. The ease of operation has been the first goal of eKAM. This is why the LCD display is so large and the dialogue in the MENU mode is made easy.

eKAM includes three measurement inputs:

• DC voltage

– High range (300 V DC)

– Medium range (10 V DC)

• AC voltage:

– High range (300 V AC)

– Medium range (10 V AC)

– Low range (3 V AC)

• Current (10 A AC or DC)

All these inputs are independent among them (unless 3V and300V) and allow the measurement of CT  outputs or of another source. In addition, a digital input (up to 300 V) is available: it can measure the timing of a wet or dry contact. The instrument is housed in a transportable aluminum box, which is provided with a  cover and handles for ease of transportation. A transport

the case can also be supplied upon request.

IEC 61850-9-2 Sampled Values

eKAM has the facility to test CT, both conventional and nonconventional, Merging Unit (MU) using the IEC 61850-9-2 (SV)protocol.  eKAM generates the current signal and injects these quantities into the CT under test. eKAM then reads the data from the network

(Sample Values) in order to perform a variety of different tests.•Possibility to test CT ratio and polarity check up to 2000 A,

3000A and 5000A. Test of MU.

TDMS – Test & Data Management Software

TDMS, Test & Data Management Software, is a powerful software package providing data management for acceptance and maintenance testing activities.

Electrical apparatus data and test results are saved in the TDMS database for historical results analysis. The TDMS database organizes test data and results for the majority of electrical

apparatus tested with ISA test sets and related software.

PADS – Power Apparatus Diagnostic Software

PADS – Power Apparatus Diagnostic Software is a powerful software application, included in TDMS software, that optionally allows the remote control of the eKAM and  STS family: STS 5000,STS 4000, STS 3000 light, and TDX 5000.

The software performs various tasks, such as:

• Download stored test results via Ethernet cable
• Create and customize test reports
• Print test results

This program runs under Windows© environment.

Note: Windows is a trademark of Microsoft Corporation.

Test Plan Editor

TEST PLAN EDITOR is an innovative and advanced software module allowing the operator to define and plan a sequence of tests. The operator defines the desired sequence of tests and sets the parameters of each test. TEST PLAN EDITOR creates a sequence of tests to be performed automatically. This feature is available for the test of the current transformer. It is also possible to create a test sequence for primary injection. At the end of the programming, starting the first test will execute the complete sequence. During the test, test results are stored in the memory. The test set minimizes the test Test plans can be saved or recalled, like test results. Up to 64 settings can be stored and recalled. Settings are permanently stored in the memory and new settings can be written to the same address after confirmation. During the test, test results can best ored in the memory. At the end of the test, settings and test results can be transmitted to a PC provided with TDMS.

The software allows saving, exporting, and analyzing test results.

Test of Current Transformer

CT Ratio, Polarity, and Burden

The ratio measurement is performed applying high current, coming from one of the BUX modules to the CT primary and measuring the CT secondary current. The burden can be bypassed, or left in series for the measurement. In this instance, the voltage drop is measured. The secondary current can be measured by a clamp. Input parameters are the nominal primary and secondary current, from which the program computes the nominal ratio and the nominal test current. The display shows:

• The actual primary current
• The corresponding secondary current
• The value of the secondary current with the nominal primary current•Actual ratio and ratio error
• Phase shift and polarity

When the burden is tested, the following parameters are displayed:

•The voltage drop across the burden;

For the burden: VA rating at the nominal current, angle and power factor

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